linux-kernel - Re: linux-next: manual merge of the driver-core tree with the iommu tree

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Message-ID: <ZD429c4kpvU0AF9v@kroah.com>
Date:   Tue, 18 Apr 2023 08:21:41 +0200
From:   Greg KH <greg@...ah.com>
To:     broonie@...nel.org
Cc:     Jason Gunthorpe <jgg@...dia.com>, Jason Gunthorpe <jgg@...pe.ca>,
        Joerg Roedel <jroedel@...e.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: manual merge of the driver-core tree with the iommu
 tree

On Mon, Apr 17, 2023 at 05:09:20PM +0100, broonie@...nel.org wrote:
> Hi all,
> 
> Today's linux-next merge of the driver-core tree got a conflict in:
> 
>   include/linux/iommu.h
> 
> between commit:
> 
>   f7f9c054a227a ("iommu: Remove iommu_group_get_by_id()")
> 
> from the iommu tree and commit:
> 
>   b18d0a0f92a8f ("iommu: make the pointer to struct bus_type constant")
> 
> from the driver-core tree.
> 
> I fixed it up (see below) and can carry the fix as necessary. This
> is now fixed as far as linux-next is concerned, but any non trivial
> conflicts should be mentioned to your upstream maintainer when your tree
> is submitted for merging.  You may also want to consider cooperating
> with the maintainer of the conflicting tree to minimise any particularly
> complex conflicts.
> 
> diff --cc include/linux/iommu.h
> index ad238d6e4677b,0fd4e6734d5b2..0000000000000
> --- a/include/linux/iommu.h
> +++ b/include/linux/iommu.h
> @@@ -455,11 -455,12 +455,11 @@@ static inline const struct iommu_ops *d
>   	return dev->iommu->iommu_dev->ops;
>   }
>   
> - extern int bus_iommu_probe(struct bus_type *bus);
> - extern bool iommu_present(struct bus_type *bus);
> + extern int bus_iommu_probe(const struct bus_type *bus);
> + extern bool iommu_present(const struct bus_type *bus);
>   extern bool device_iommu_capable(struct device *dev, enum iommu_cap cap);
>   extern bool iommu_group_has_isolated_msi(struct iommu_group *group);
> - extern struct iommu_domain *iommu_domain_alloc(struct bus_type *bus);
> + extern struct iommu_domain *iommu_domain_alloc(const struct bus_type *bus);
>  -extern struct iommu_group *iommu_group_get_by_id(int id);
>   extern void iommu_domain_free(struct iommu_domain *domain);
>   extern int iommu_attach_device(struct iommu_domain *domain,
>   			       struct device *dev);

Merge looks good to me, thanks!

greg k-h